Changeset 56409 in vbox

Timestamp:

Jun 14, 2015 12:10:52 AM (10 years ago)

Author:

vboxsync

Message:

lwip: fix wraparound check when updating icmp echo reply checksum
that incorrectly applied carry to 0xFFFF too.

File:

• trunk/src/VBox/Devices/Network/lwip-new/src/core/ipv4/icmp.c (modified) (1 diff)

trunk/src/VBox/Devices/Network/lwip-new/src/core/ipv4/icmp.c

@@ -206 +206 @@
 #if CHECKSUM_GEN_ICMP
     /* adjust the checksum */
-    if (iecho->chksum >= PP_HTONS(0xffffU - (ICMP_ECHO << 8))) {
+    if (iecho->chksum > PP_HTONS(0xffffU - (ICMP_ECHO << 8))) {
       iecho->chksum += PP_HTONS(ICMP_ECHO << 8) + 1;
     } else {